turck



Patented Mar. 15, 1921.

14 SHEETS-SHEET1.

` INVEN OR. MM

'l ORNEYS.

J. A. V. TURCK. CA'LCULATlNG MACHlNE. APPucATl'oN man sEPT.30,1918.

PPLICATION FILED SEPT. 30,1918.

14 SHEETS-SHEEI 2.

ull ilHIHlIIIIIII WITNESS,

(V35- f Y INTOR.

J. A. V. TURCK.

CALCULATING MACHINE.

APPLICATION FILED SEPT. 30,1918. 1,371,954, Patented Mar., 15, QZL

14 SHEETS-SMU 3.

w/IWESOES:

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mmf/vm J. A. V. TURCK.

x CALCULATING MACHINE. ABPLlcATloN FILED sEPT.3o.191a.

Patented Mar. 15, 1921.

I4 SHEETS-SHED 4.

WI TNESSES L'A. V. TURCK.

CALCULATING MACHINE.

APPLICATION FILED SEPT. 30, ma.

Patented Mar. 15,l 1921.

14 SHEETS-SHEEI 5.

.WN DNNWI/ I VEN TOR WI TN SSES:

J. A. V. TURCK.

' CALCULATING MAcHxNE.

1,37 APPLICATION FILED SEPT.30, 1918- Patented Mar' 15 14 SHEETS-SHED 6.

'aff' ""As MUM;

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INVENTOR.

J. A. V. TURCK.

CALCULATING MACHINE.

APPLICATION FILED SEPT. 30.1918.

1,371,954. Patented Mar. 15, 1921.

. v 14 SHEETS-SHEET 7.

ORNEYS.

1, A..v`.l URCK.

CALCULATING MACHINE.

APPLiCATION E ILED SEPT. 30,1918.

Patented M8JIV15, 1921.

14 SHEETS- snm 8.

Wl TNESSES:

A TTORNEYS.

J. A. V. TURCK.

CALCULATING MACHINE.

APPLICATION FILED SEPT. 30. Isla,

1,371,954. Patented Mar. 15,1921.

14 SHEETS-SHEE 9- IN V EN TOR.

4.1,/14 BY m 7:55 www' J. A. V. TURCK.

CALCULATING MACHINE.

APPLICATION man SEPT. 3o. 191s.

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Wl TNESSES:

J. A. V. TURCK.

CALCULATING MACHINE.

APPLICATION FILED SEPT. so, 1918.

Patented Mar. 15, 1921.

14 SHEETS-SHEEI Il.

INVENTOR.

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W I T ESSES:

J, A. V. TURCK.

CALCUL/ums MACHINE. Y APPLICATION-FILED SEPT.30. 1918. 1,371,954. yPatented Mar. 15,1921.

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zoq- /Q- W QUE? I go 275 225 290 INV TOR. WITNE'SSES.- 2,6 2/6 Q7 @/77%77 Y B f L'A. V. TURCK.

CALCUL/mw@ MACHINE.

APPLICATION FILED SEPT.. 30, 1948. Mar. I4 SHEETS-SHEE l3- 1N NToR.WITNESSES; A ZZ QQ//ZJORNEYS.

J. A. V. TURCK.

CALCULATING MACHINE.

APPLICATION FILED SEPT. ao. 191s.

1921. '14 SHEETS-SHEEI 14.

INI/ENTOR.

T oRNEI/S. l

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Patented Mar. 15

Wagga" keys,

UNITED -sTATEs JOSEPH A. v. TUBCK, OF WILHETTE, ILLINOIS, ASSIGNOR TOFELT & TAREAN l C0., O'F CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PATENT oFFlcE.

r nrc.

CAIlC'ULATING-HACHJINE.

To all uihom it concern:

Wilmette, in*tl1e county ofr Cook of Illinois, have invented a new anduseful VImprovement in Calculating-Machines, of

which the following is a specification.

This invention' relates in general to calculating `machines and has forits object broadly the provision of new and 'improved calculatingmechanism for adding and subtracting, multiplying and dividing, whichmay be incorporated in a power-driven key- `responsive calculatingmachine and which will be possessed ofhigh eiiiciency and be of certainand rapid automatic action.

vA principal object of the invention is the provision of a calculatingmachine, oper- Y able at high s eed, forthe adding and subtracting, mtiplying and dividing, the parts of which will be so constructed andarranged that the machine may be arranged fr addition and subtraction ormultiplication and division by the mere setting of a multiplication orcontrolling lever and readily changed from arrangement for one operationto that'ofanother by'shifting of such lever.

During'multiplying it is intended that the multi licand may be set upupon the usual addlng keys and the multiplication by r be-accomplishedautomatically and immediately upon the Striking of proper keys ofaseries of multiplier the setting ofany one of which starts the operationof repeated addition', repetitlon continuing the number of times deter-`mined by thevalue of the key struck.

A further object of the invention is the provision of such a machine inwhich all of the-calculating movements will be positively produced orfrom a continuously moving power member.

A still further ob'ect of the invention is the provision of suc amachine em loymg the segment levers and accumulatlng devices of thegeneral character of those of the well-known comptometer and in whichsuch devices vwill actuate in substantially their usual manner.

A. further and highly important obect of the invention is the provisionof 'a ca culat-` ing machine so constructed that mlsmanipulation of thekeys, z. e. imperfect key strokes,

Speciication of Letters Patent.

Application 'med september 3o, 191s. serial MPatented Mal-15, 1921. No.256,174.

and prematureactuationof the keys will be prevented. A still further andhighly important object of the invention is the provision of acalculating machine., having mechanisms whlch may be-renderedkey-responsive or key-set at the will of the operator. l

Other objects and advantages of the invention will beapparent as it isbetter understood from the following description when considered inconnection with the accompanying drawing illustrating a preferredembodiment thereof.

On the'l drawings, Figure l is a top plan view of an adding 'machineembodying my present invention;

Fig. 2 is a side elevation of the same;

Fig. 3 is a top plan view of the same with the casing and key carryingportions removed;

Fig. 4 is a front-to-back vertical section taken through theaddingmechanism and looking to the rightviewing Fig. 1;

Fig. 5 is a similar view taken at the side .of .an adding machine andlooking toward the-left.

Fig. 6 is a view similar to Fig. 4 and taken at the side pf an addingmechanism;

Figs. 7 and 8 are transverse vertical sec-- v tions across the machineand looking inoppositev directions Figs. 9, 10 and 11 vare partialdetails showing the actioncf certain parts `in adding and subtracting;

Fig. 12 is 'a vertical section similar to Figs. 4 and` 6 but taken atthe extreme left of the calculating machine and showing the lever forarranglng the calculating machine for addin and subtracting or formultiplyin and dlviding;

Fig. 13 is a similar view taken at the other side of the machine andinwardly of `the 4sexies of multiplier keys;

Fig. 14 is a similar view the multiplier devices; Q

Figs. 15, 1 6 and 17 are showing theaction of t P11I1g;..v

1g. 18 1s a pers tlveview cfa series of adding keys an the partsimmediately associated therewith; and A Fig. 19 is a vertical sectionshowing parteY of a zeroizing mechanism. i

My present invention includes an adding taken through partial detailviews e parts in multiecuted by me June 20, 1918, and in the embodimentof the present invention shown on the drawings this adding' mechanism isincorporated. The machine vin adding op! erates in substantially thesame fashion of the machine of my co-pending application mentioned, themachine in this operation being key-responsive; that is to say, theprime actuators are immediately operated as the keys are individuallydepressed and, in the present instance, from a continuouslymovf ingpower shaft. Key-responsive means that the calculating actions of thesegment levers are individual and immediate and from a force otherthan-the Vforce supplied by the vkey stroke. In multiplying the actionof the machine is key-set; that is to say, the segment levers of acomplete number are set by the keys in position to actuate and thesegment levers of the complete number are given their operative strokesimultaneously from some outside power and are therefore subject to acommon control. When operating in the key-responsive manner no actionother than the mere pressing of a key is necessary to producecalculation; whereas in operating as a key-set machine some other membermust be manipulated.

In the machine of my co-pending application when a key is struck asegment lever is lowered and the key locked down until the several partsoperate by actuation by the positive power device. Stop and lockmechanisms are provided which Y are connected by positive link actionwith the segment lever. In accordance with the present invention' it isproposed to render this link action either positive or loose thus inmultiplying allowing the segmentv lever to 'be returned to normalposition as in the add-` ing'- movement while leaving the stop andlocking mechanism in set position so that after the adding movement thesegment lever may return into position for reactuation, the key whichhas been set being held in downward or locked position. The segmentlever is repeatedly actuated by the continuouspower mechanism a numberof times 'in accordance with the depression of the particular multiplierkey. When the actuations havereached the proper number the linkconnection is rendered automatically positive and the parts are returnedtotheir normal or inoperative positions.

While from certain aspects the invention concerns itself with themultiplying, it is also true that it relates to the combination of themultiplying mechanism and the adding mechamsms and ffor the purposes ofclearness therefore the adding mechanism will be described in detail,the accumulators and the vportions actuated by the segment leversbeing'substantially those of the comp- 933 to Dorr E. Felt issuedSeptember 9,V

1913, Patent No. 1,088,219 to Dorr E. Felt issued February 24, 1914 andother patents to Dorr E. Felt and also Patent No. 1,110,734.

For the purpose of illustrating the invention, I have shown on thedrawings a machine in which it is embodied. The working parts'aremounted within a casing 25 of any usual or preferred construction,through the top of which extend' the key stems 26, each carrying afinger button 27, `said button and stem constituting a digital key, uponwhich suitable indications, as numerals ranging from 1 to 9 with theircomplements, vare provided. The operative' parts are carried in a framevlocated within this casing, which consist of skeleton plates '28disposed between the denominational or ordinal sets of mechanism and ateach side of the machine within the casing walls, and tie rods or bars29 are suitablyl arranged to connect said plates rigidly together and incertain instances to aiord bearing pins or shafts for the moving parts.

l A sub-top plate 31 is secured to the casing just beneath the top platesol that when the casing is taken off the keys will come with it andexpose the internal mechanism. The keys are arranged in orders anddenominations, tending from the front to the rear, and as stated, thekey stems extend through the" ltop of the casing.- Each' key stem 26 isrectangular in crossy vsection .and

is of 'relatively short length. A vertical slot 32 (Figs. 7, 8 and 18)extends from its lower end upwardly, providing two legs 33 and 34, oneof which, 34 (the one at somewhat wider than the other, 33. The

lower ends of each of these legs respectively extend through openings orslots in the subtop plate 31, so that each key stem is guided in itsmovement by the top of the casing and the sub-top plate 31. Springs 37are provided to hold the keys in elevated position, one end of eachspring taking into a slot or recess 39 in the narrower leg. When a keyis depressed the two legs 33 and 34 of its stem are moved downwardtogether through the casing top plates and arrange the bottom of theframe to just beneathl the platel 31. These arms are pivoted upon -theVleft viewing the front of the machine) is each order or denomination ex1,371,954 i i 'a' cross' rods 40 ands are connected at their which willbe later described, normally pulls tops at 43 with a differential bar44,'said the latch downwardly in clockwise direction armsbeing paralleland movable abouttheir (viewing Fig. 4) and linto engagement withpivotal axes to permit the Abar 44 to havevv the'lug 66.- This latch isadapted to be re- 5 a longitudinal reciprocating movement. A leased ateach depression of a key by a 70 spring 45 fixed at one end toa lug 46on the mechanism to be now described. forward arm'41, and at the otherto a lug A relea'sebar 69 is provided beneath vthe 47 on theunder sideof the bar 44, tendslegs 33 of -the keys of eachorder and pivto move thearms 41 and 42 forwardly in the otally connected to okes 71 and 72pivotally .1o machine about their pivotal axes and to im- .mountedrespective y upon cross rods 7 3 and 75x part forward longitudinalmotion to the bar 64 at the front and rear ends, each yoke 44. The to ofthe bar 44 isfprovided with having a perforation in its main part a'horizontally extending flange indicated at through which Athe rodpasses. and having 4,8 in Fig. 3, which flange is out away at wings 71fand 72 extending out at the side intervals at 49 to provide spacedopenings and returning upon themselves, .the return 80 adapted tO-bedisposed beneath the key stem portion being perforated also forreception whenthe bar is in retracted position, and a of the rod. Alower bar 74`also connectsV plurality 0f Stops 0r lugs 51v extend outbethe yokes and this bar is connected by a yond the flange 48. When akey 1s depressed spring 7 5 with the rear yoke 72, said spring 20ltsileg 34 llloVeS doWh thro h the appropliand the bars vand yokes beingso arranged 85 ate opening 49, whereupont e bar 44 is p61 that the sprigtends to swing the bar 69 mitted to move forwardly under the actionupwardly, The release bar 69, yokes 71 of its sprin 45,- the'portion ofthe ange: and 72,-and the lower bar 74 are thus so 48 I'GMWM'` of theopening i9 i"hl'ollgh arranged that the ,bar 69 may bel loweredlwhich-the 1e 0f the key extends, passing and retained in'parallolisinwith its normal 9o i. through e Sot- 52 Pi'ovlded fol. the P111 positionand theyokes have a pin and slot pose. The bar 44 moves forward untll aconnection 80 with tho oioaso bar for limiting 11g 51 engages the StemThe Several lllgS, the movement under key pressure. The

51 are arran edn rearwardly of the recesses, win 72" of the yoke 72 isdisposed im- :mi at diiielellt iSteneeS, to Provide e diiielen'medlately beneath and in contact with the 95 the recess than thesimilardug back of the 'tial mOi-i011 for the hal' 44 `i11alllollhl'iide-V latchorhook 63. The pivotal connections .termined bythe particular ke of its order betweenlthe' bar '69 and the yokes 71 andmanipulated It Wlll -he note the@ the il1g- 72 are rearwardly of theaxes of pivotal 51 back 0f the IeCeSS the 1S nearer movement of theyokes and in almost horzontal 'alinement with them, so that when 100receSS 49 at the llght- Ill the first lhstelife a 'key is depressed thebar 69 has nearly a the Companion' key is the 1' key ehdilh truedownward movement.v This swings the the latter instanoethe 9 key- 'yoke72 forwardly and lifts the wing 727 It Wiii he noted that the# heiii 1S'oon' to release the latch. During this timethe nected by a link 53 W1tl '1 01,16 end 01"?1111 54 key is moving on down and when'the latch 105of a skeleton lever 55 P1v0ted upon a cross is released the slot 52 inthe .1o 34 of the rod or shaft 56. Thls lever is-a 'segment -key is inregistration with the. ange 481m lever that actuates the accumulator andhas the bar 44, which Hang@4 now moves into the all am 57 eXtelldihgforwerdiy., Whieh eefslot of the key,-holding it down until the Ties etoothed Took oi' Segment -58 which bar 44 is returned to normal positionat the 110 actuates the acumulator- AS the bar 44 ond of the calculatingmovement, as will bo moves forward, Which oeeuls P011 memppresentlydescribed. The differential bar 44 uiotion of e key of its ol'del', theiihk 53 continues to moveforward until the appromoves forward also andthe rack 58 swings priate lug51 en ages the side of the key 5odownwardly in an idle Stroke, the amount stom and the mao ino is thonsotto have the 115 l of this movement heilig determined hy e, number addedinto the accumulators by the Pi'ticular key depressed ,The-t iS '50 Say,action of the continuousl movingpower the movement is terminated whenthe eP- members now about to be escribed, it beingl propriete lug 51engages e key Stem- A understood that th'e segment lever has moved '55spring 595 fastened at one end to a lip 61 down an amount determined bythwpar-` 120 onthelever and at the other end to a tcular key'of theorder manipulated and rod 62 extending across the machine pro the addingoperative movement is the return ducesthis-forward movement. The bar 44or u ward movement of the segment lever. is normally retained inposition-to hold the :A l' e action occurs in multiplying as will o orack and larm or segment lever 55 elevated -be later'described. i 125,by'a latch 63 pivoted upon a xed rod64 A continuously rotatmg powershaft 91 in the `frame of the machine and engag'ug extends transverselyof the machine at the 'overa stud 66`carried by the arm 54. rear and hasbearmgsat 92 1n the frame spring 67 secured to a tail 65 of` the hook ofthe machine.

` e5 or latch 63 and to' a part ofthe mechanism, The shaft 91 isprovided at its left-hand 130 end with a crank 104 connectedto a 105,which in turn is connected-to a crank A 106 upon a shaft 107. By reasonof this crank connection reciprocating 'or oscillating movement iscontinuously imparted to the shaft 107 and it is from this shaft thatdirect production of the adding movement is accomplished. The shaft 107'passes' clear across the machine and is provided ad] acent each segmentlever or arm 55 with op-' positely extending arms 108 and 109 adapt-` aspring 119. The dog 117 engages Ein oneA of two teeth 121 and 122 in theupper end of a swinging bracket arm 123, as best shown in Figs. 9 and11, which arm is piv.

oted at 124 on the segment leverl A driving arm 125`is pivotedbnethebracket arm 123, which, as will be later described, is positively anddirectly engaged to actuate the segment lever when the segment leverhasbeen lowered for an operative return stroke. The tail of the bracketarmis connected by a spring 126 (Fig. 4) with the segment lever,

such spring tending to move the arm in a counter-clockwise direction'. Aspring 120 iis provided to pull the bracket arm about the pivotalconnection of the driving and bracket arms and engages suitableLlugs fon the two arms to press the driving arm in' a counter-clockwisedirection (Fig. 9), movement in this direction being limited by the pivot pin 124'on the bracket armwhich engages the right-hand end of thedriving arm. The dog normally en ages the frward tooth 121, as shown inig. 9, holding the arm elevated.

' Viewing Fig. 9, it will be noted that the projection or arm 109 onthel shaft 107 is provided with'a driving in 127 and in the oscillationof the shaft 10 this pin. is swung ina counter-clockwise direction. invits operative stroke. The arm 125 normally rests above the arc of travelof the pin 127 andis .adapted to be operatively arranged for engagementtherewith by the shifting of the\ pawl 117 from the lower notch 121 tothe upper notch 122 under the action of the stop 111.v This action willbe seen by comparing Figs. 9 and 10.A The segment lever 55 when in upperraised position holds the pawl`117 out of the path of travel ofthe'stop, 111, so

j that in the mechanisms associated with the rowslof keys which have notbeen manipu- .not therefore be describedv in detail.

tive position no action of the pawls y117 is reduced` by oscillationlof' the shaft 107. en, however, a key has been depressed and the segmentlever swung downwardly a :latedto lower the segment levers to opera- Acorresponding or desired amount, the tail v 116 of the pawl is movedinto position to be engagedby the dog 111 to move the pawl Y out ofengagement with the tooth 121 and into engagement with the notch 122. Ofcourse the pawl will assume different positions with respect tothe pathof movement .of the dog, depending upon the amount of movement of thesegment lever, and in order that in its various positions the pawl maybe properly engaged, it is somewhat elongated.- In order that thedriving arm may be accurately engaged when the segment lever has beenlowered in response to the lower numeral keys, the arm 125 is providedwith. a tail 131 adapted to move down upon the pin 127, and undercertain circumstances acts as a guide to insure engagementI of the jaw130 of the paw^l with the pin 127. After oscillation of the arm 108 onthe shaft to set the pawl 122 the shaft starts a movement in the reversedirection, swinging the arm 109 and its pin 127 in a counterclockwisedirection, viewingFigs. 9, 10 and 11, engaging the jaw of arm 125 andmoving the .segment lever up to its normal position, which movement ofthe segment lever accomplishes the adding movement in the accumulator,'as will be presently described.

The segment 58 ofthe segment lever is in continual mesh'with the pinion141 upon a pinion shaft 142 extending across the machine and this pinionis connected by a ratchet 144 with a lantern wheel 143. The accumulatormechanism, which includes' these last mentioned parts and the numeralwheels 139 and connect-.mg parts, is in the present instancesubstantially that of the well-known comptometer, fully described inLetters Patent `of the United States No. 1072933 to Dorr E. Felt, issuedSeptember 9,

1913 and other patents to said Dorr E. Felt,

and also in United States Letters Patent No. 1,110,734, and alsomentioned in my co-pending application Serial No. 231,814, filed May 1,1918, for zeroizing mechanisms', and need should be mentioned, however,that the lantern wheel 143 has fixed to it a pinion 140, which is thefirst of-a chain of gears 145,

.146 and 147 mounted respectively on shafts 148, 149' and 151, whichconnect the lantern wheel with the numeral wheel, the last mentionedgear, 147, being ixed to such numeral wheel. Suitable safety devices aainst overthrow and back-latch and mec anismv for4 vcarrying areprovided, which need not be described here, except to state that thestops and safety .devices engage the lantern wheel and thatthe -carryingis actively done inthelo IMI-,954',

.first instance from 'one order tothe next higher by a spring 152attached to the gear 145 and toan escapement driving mecha-, nismindicated generally vat 153 in Fig. 5.

of advances of ten steps, is released to .impart a single step advancetothe next higher` wheel.

The numeral wheels, through Ythe mecha-Y nsms. described, receive actionor calculatmg movement by the upward travel ofthe segments underpositive actuation of the arms125, in turn 'positively actuated Afromshaft 107; When the machine is arranged for adding onesuch actuationresults from the depression of eachkey in any of the orders of themachine and'when the machine.

is thus arranged actuation of a segment, and through the segment theaccumulator, results in an immediate rearrangement of allof the partsback to normalfposition.

In'multiplying, however, this complete rearrangement is not perfecteduntil after the segment lever has been operated in this fashion thedesired number of times to eifect the multiplication. In multiplicationit is necessary therefore that the segment lever of each of the ordersbeing multiplied may be merely controlled as to extent of movement bythe differential control bar 44` and that it be otherwise controlled bythe multiplying mechanism, proper. In other words,A

in adding the control of each Segment lever is' by mechanism Whollyindividualized to said'segment lever', and in multiplying by mechanismYat least in part disassociated from the particular mechanism of theparticular segment lever and Apreferably eXerting a common controlof'fall thesegment levers.

It has been mentioned that each segment lever is connected by a linky 53with the differential bar 44 particularly associated with the particularsegment lever.- This link, best shown in Fig. 6, is provided with a slot161 at its free end, the forward end 162 of the slot being extendeddown, and `a recess 163 of rectangular shape being provided tocommunicate with the rear end of the slot. A lug 164 is provided uponthe link and connected by a spring 165 with Vthe segment lever so thatthe link is pulled up in'a clockwise direction (viewing Fig. 6), arectangular lug or stop 166 extends out from the side of thedifferential bar 44 and into the slot and this stop rests in the recess163 under normal conditions, the spring 165 holding the link in properposition. When the'machine'isarranged for adding, the stop 166 restscontinually invtherecess 163 so that the connectionbetween the link anddifferential bar 44 is substantially fixed.`I -Upon a key being struckthe latch 'end'of the slot 161. The dog 178 has an 63 islifted, thediierentia'lbar moves forv ward an amount determined by the particjularkey, the segment lever drops corre-- 'spon'din ly, the pawlor dog 111shifts the `latch 11 from engagement with the notch shaft 168. and aslight further movement of thepin 127 pushes the bracket 123 about itspivotal axisto permit the latch 117 lto 80 rengage in notch 121 and atthe same time the.- latch 63 drops back into locked position.

During a multiplying movement the lug 162 Ais maintained out ofengagement with the recess" 163 of the link 5 3 until a desired numberof actuations of the segment levei` have taken place. v,

To arralnge the mechanism for multiplying, a finger piece 171 formedupon the end of a swinging arm 172 mounted upon a shaft 17 3' within theframe, extendsV through a slotl 174 in the top wall of the casing, as 12y 175, the operation being repeated inv acordance withthe numbersmultiplier. l'

The fshifting of the finger piece 171 bri 105 into action a' controlmechanism which will be now, described. The arm 172 isl clutch connectedupon the shaft 173 which rocks when the finger piece is moved. Thisshaft carries a number of fingers 176, one located at eachdenominational set of mechanisms. This finger moves beneath a tail 177of a dog 178 pivoted upon a swinging lever or arm 179, which in turn ispivoted upon a cross shaft` 181 and the spring 67 .already mentionedengaging a latch 63 at one end engages the arm 179 at the other. Thisarm or lever 179 carries at its forward end a pin 189 disposed normallyinthe forward of figures in the operating part 182 adapted to bedisposed [beneath a shoulder 183 upon the end of an arm extending backfrom the Wing 72 of yoke 72. When the finger piece 171 is in theaddingposition the iingers 176- bear against the tails of the do andhold them outfrom beneath the shouers 183. 'When, however, the lingerpiece is in the multi lying position springs'184 secured to the ogs andto the levers 179 pull these dogs l'over 1239 vdependent movement.

into position to colperate with the shoulders 183. In this posi iondownward pressure upon the lock bar results inthe depressing 'of therear endv of a link until the stop 1 66 is free of the recess and thelink and differential bar of the mechanism of the particulardenomination are thus free for 1n- 185 is,- mounted a plurality of bellcranks -v20. v. ends ofthe arms 179 and normally resting 186, eachhaving one arm provided with a hook or latch 1 87 and the other securedi to a common vcontrol bar 18/8. 'The latches y187 are normallybeneathvad in' advance of overturned lugs 190 upon the rear. of thelinks so'that when these links are .pulled down by the action of thearms 166 they immediately hook up and are held by the latches 1872-l Theactual downward movement-of the rearend of the links 1s accomplished bypins" 189 carried on the forward in the forward downturned ends. of theslots. The setting up of vthe multiphcand there- "-fore is'attended onlyby the releasing of .appropriate 'latches 63 and movements` of theappropriate. or selected denominational 'bars 44, the segment leversremaining in 'elevated position and the rparts remain vso until-Imultiplication begins.

l will now ldescribe themultipller control mechanism and the actionwhich accomof the keys of' theA panics the depressin multiplier column.eferringnow to Figs.

' 13 to 17 linclusive, it will be vnoted Vthat a differential bar 191,similar; in every respect to the" dierential bar 44, is provided uponthe upper ends of upstanding-farms 192 and l193 upon thev cross shafts40 like the up" standing arms 41 and 42 of the denomina- A except thatits slot 204 extendsrearwardly of its recess 205e. .slight'distance fora purpose tti ,be later explained. Like the link 53 it carries ashouldered'tail 206 adapted for engagement with a latch 1207 u on thebar 188. When anymultiplier key 1s depressed, theparts being arrangedfor multiplication, the dierential barA 196 moves forward an amountdetermined by the particular key, the shaft 173 being provided with afinger 268 engages undera tail 209 of a dog 210 upon a lever 211pressing down the link A203 inthe manner already described in connectionwith the action of the links 53. -Forward movement of the dierential baris accompanied rst by the setting of a multiplier determinatorconsisting of a toothed rack 212 upon one Upon a cross shaft Inism ofthe' denominational orders.

end of a lever 213 pivoted upon the shaft 56 -I p and connected by, alink 214 with the forward arm 192 attached to the dierential bar, thistoothed lever being swung downwardly in amount corresponding to theparticular key depressed. Immediately thereafter the links ofthe severalorders of keys are released and the segment levers o f the orders ofkeys Set up in the multiplicand permitted to drop to begin themultiplying' operation. This is accomplished in the following manner:Upon `the shaft 107, which it will be remembered is the continuouslyoscillating shaft extend-i ing across the machine, is fixedly mounted amutilated pinion 215 which is in continuous mesh with a similar pinion216upon one arm 217 of an oscillating member 218 upon shaft 40. Theother arm 219 of this member carries a pinion 221 meshing with a pinion222 (both mutilated) upon. a member 223 loose on the shaft 107 andhaving arms 224 and` 225 much like arms 108 and l109 of the mecha- Thelength of the arm 217, however, is greater than the length of the arm219 so that these several gears and arms form a reducing mechanism for.the throw of the arms 224 and 225.

Upon the arm 224 is'provided a pin or I stud 226Which is adapted toengage in a jaw 227 upon the end ofan arm 228 pivoted at 229 on a lever231. This arm has an upwardly extending lug 230 pulled by a spring 234in an upward direction. A pressure stop member 232 is provided upon thepivot 229 and is normally pressed in the opposite direction by a spring233 more powerful than the spring 234. This pressure stop member has abent lug 232 extending past the lug 230 and normally beyond it a slightdistance the stop member being limitedv in its clockwise movement byengagement with the lever arm v231 as indicated in dotted lines in Fig.14.

The lever 231 is connected by a link 237 with a lug 238 extending downfrom the bar 188 so that movement of the leverin a clockwise directionL(viewing Fig. 14) will result in a clockwlse movement of the bar 188about its pivot axis and releasin the links of the denominationalorders. s a result the segment levers of the several denominations whichhave been 'set up in the multiplicand are immediately dropped intoposition for actuation.v c,

This 'action prior to this time has been prevented by a pin 242 upon theend or arm (see Figs. 14 and 16) of the rack carrying lever 213 whichpresses down'upon the arm 228 so lon as the lever 213 is in normalposition. i en the multiplier determinatlng .rack is lwered the pin 242is raised and the lll spring 234 pplls the arm'228 up in position toengage the stud 226 valready mentioned upon the rst'followingcounter-clockwise

